Synthesis and characterization of some aromatic polyamideimides from diamino-pyrromellitimides and terephthalic acid/isophthalic acid

被引：0
|
作者：
Hussain, S [1 ]
Borgohain, S [1 ]
机构：
[1] Dibrugarh Univ, Dept Chem, Dibrugarh 786004, Assam, India
来源：
JOURNAL OF POLYMER MATERIALS | 2002年 / 19卷 / 01期
关键词：
pyrromellitic dianhydride; polycondensation; phosphorylation; triphenylphosphite;
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Eight amideimide polymers have been synthesized by direct polycondensation of four diimidediamines and two aromatic dicarboxylic acids-terephthalic acid (TPA) and isophthalic acid (IPA). The diimide-diamines (3a-d) were synthesized from pyrromellitic dianhydride and the amines-p-phenylene diamine (2a); benzidine (2b); 4,4'-diaminodiphenylmethane (2c) and 4,4'-diaminodiphenyl sulfone (2d) respectively. The polycondensation reactions were done by using triphenylphosphite (TPP)/pyridine (Py) in N-methyl-2-pyrrolidone (NMP) in the presence of calcium chloride and lithium chloride. The polyamideimides have been characterized by IR and H-1 NMR spectroscopy and elemental analysis. The solubility and intrinsic viscosity of the polymers have been determined. Thermal stability of the polymers was checked by thermogravimetric analysis (TGA) and differential thermogravimetric analysis (DTG).
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页码：1 / 6
页数：6
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